CPAN RT

strings prints strings gleaned from the given files (or from standard input.) By default strings of less than 4 characters are ignored.
A string is considered to be any sequence of graphical ASCII characters (plus space and tab).

Options:

-f Print the file name with each string.
-n length Set the minimum length of strings to print; 4 by default.
-o Print each string with the octal offset in the file.
(Same as -to).
-t {d|o|x} Print each string with the offset in the file;
specify decimal, octal or hexadecimal respectively.

The -a option is included for compatibility with older versions but does nothing.